Wristwatch



FIG. 1 is a perspective view of the front and one side of a wristwatch showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a side view of said one side thereof;

FIG. 5 is a side view of an opposite side thereof;

FIG. 6 is an end view thereof; and,

FIG. 7 is a opposite end view thereof. 

The ornamental design for a wristwatch, as shown. 